One of the great saints of Damascus who took hadith from Sufyan ibn 'Uyayna. Ibn al-Jawzi relates in 'Sifat al-safwa' that al-Ju'i explained that he got the name al-Ju'i ('of the hunger') because Allah had strengthened him against physical hunger by means of spiritual hunger. He said:
Even if I were left one month without food I would not care. O' Allah, you have done this with me: Therefore complete it for me!
SHAMS AL-DIN AL-DHAHABI writes about him in 'Siyar a'lam al-nubala':
Al-'Abdi, known as Qasim al- Ju'i: The Imam, the exemplar, the saint, the Muhaddith... the Shaykh of the Sufis and the friend of Ahmad ibn al-Hawari. (al-imam al-qudwa al- wali al-muhaddith Abu 'Abd Al-Malik Al-Qasim ibn 'Uthman al-'Abdi al- Dimashqi, Shaykh as-sufiyya wa rafiq Ahmad ibn al-Hawari,'urifa bi al- Ju'i).
Ibn al-Jawzi also relates that Ibn Abu Hatim al-Razi said:
I entered Damascus to see the transcribers of hadith. I passed by Qasim al-Ju'i's circle and saw a large crowd sitting around him as he spoke. I approached and heard him say:
Do without others in your life in five matters:
- If you are present among people, don't be known;
- If you are absent, don't be missed;
- If you know something, your advice is unsought;
- If you say something, your words are rejected;
- If you do something, you receive no credit for it.
- If you are wronged, do not reciprocate it;
- If you are praised, don't be glad;
- If you are blamed, don't be distraught;
- If you are called liar, don't be angry;
- If you are betrayed, don't betray in return.